Metal sheet and corner protector



Dec. 27, 1955 R. J. LEANDER METAL SHEET AND CORNER PROTECTOR Filed Sept.12, 1951 INVENTOR. RUSSELL J LEANDER ATT'Y Unite l States Patent 12,728,451 METAL SHEET AND (IQRNER PROTECTDR Russell .l. Leander,Chicago, llL, assignor to Qliicago Show Printing Company, Chicago, 111.,a corporation of Illinois Application September 12, 1951, Serial No.246,197

1 Claim. (Cl. 206-60) This invention relates in general to a cornerprotector and is more particularly described as a corner protector forsheet metal such as thin sheet steel, copper, aluminum, and other metalsor even sheets of paper, fiber, cardboard, and the like.

When sheet materials of these various kinds are stacked for storage orare handled for shipment, they may be easily bent, crumpled or damagedat the corner or corners, which results in a loss of time to straightenout the bent corner or any material to cut away the damaged portion.

The present invention provides an easily attachable thin angularprotector which may be easily applied to a single corner or to all ofthe corners of a sheet of material for the purpose of protecting thematerial while it is being handled or when it is stacked or stored.

An important object of the invention is to provide a corner protectorwhich may be quickly and easily applied to one or all of the corners ofa sheet.

A further object of the invention is to provide a pressure sensitiveadhesive on the protector so that it will adhere to any corner of sheetmaterial to which it is applied and may be easily removed therefromwithout damaging or defacing the corner or in applying or removing theprotector.

A further object of the invention is to provide a foldable angular pieceof sheet material which is scored so that it will fold over the oppositeside faces of a sheet material at the corner thereof, the outer face ofthe protector being scufi-resistant and the inner face of the materialhaving a pressure sensitive adhesive for causing it to adhere closely toboth surfaces of the sheet to which it is applied.

Other objects of the invention will appear in the specification and willbe apparent from the accompanying drawings in which,

Fig. l is a plan view of a corner protector in accordance with thisinvention showing the pressure adhesive side and the score line uponwhich it is foldable;

Fig. 2 is a perspective view of a corner protector as shown in Fig. 1which is partially folded on the score line;

Fig. 3 is a perspective view of a sheet having protectors in accordancewith this invention applied to all four corners of a sheet; and

Fig. 4 illustrates an end elevation of a number of stacked sheetsshowing the way the protectors will rest upon each other spacing thecorners of adjacent sheets apart and protecting them at the corners.

Metal sheets are frequently stacked forming aisles and passageways sothat the corners are exposed not only for defacing engagement of thesheets, particularly at the corners, but also the sharp projecting edgesparticularly near the corners are likely to seriously cut the clothingof workmen and to seriously deface trunks and other articles which comein contact with them.

The present invention is designed and intended to provide a protectorfor the metal or other material to which it is applied and also toprotect persons and objects which may brush against or come in contactwith sharp sheets at and near the corners thereof.

Referring now more particularly to the drawings, this protectorcomprises a thin sheet 10 of paper, fiber, plastic, or other materialadapted to be bent around and to be applied over the corner of a thinsheet 12 of any other material. Preferably the protector is composed ofpaper which may be of the order of ten or fifteen thousandths 2,728,451Patented Dec. 27, 1955 in thickness with one scuff resistant surface 14which will resist abrasion and the other surface coated with a pressuresensitive adhesive 16.

The protector is preferably in the form of a right angle triangle havinga score line 18 extending from the right angle normal to the oppositeside, thus dividing the protector when folded upon the score line intotwo equal right angle triangles.

In applying these protectors to a sheet, they are preferably partiallyfolded as shown in Fig. 2 upon the score line 18 which adapts them to beplaced equally over opposite sides of the sheet 12 at the cornerthereof, the folded portion of the protector being located over thatportion of the edge which is most subject to contact due to the locationof the sheets, the folded portion extending over one edge of the sheetas shown in the lower corner of Fig. 3 and over one end of the sheet asshown at the left corner of Fig. 3.

When these protectors are applied at the corners of a number of sheetswhich are in a stack, the sheets will be offset from each other doublethe thickness of the mate rial of the protector as shown more clearly inFig. 4, particularly at the corners thereof. If the sheets are large inextent, the central portions may come flatly together in the centralportions thereof, the protectors raising the corners as represented inFig. 4.

These protectors may be supplied in adhesively connected stacks or theymay be provided in strip form oppositely related to each other,partially severed and connected in rolls if desired. To remove theprotector, it is necessary only to grasp and loosen one or both of theangular corners remote from the fold line and to strip it from the sheeton both sides thereof. The pressure sensitive adhesive usually beingcomposed of rubber or a rubber-like adhesive, does not mar, stick to ordeface the sheet material and when the corner protector is removed, thesheet itself is ready for use without any further cleaning attentionthereto. Although a scuff-proof paper with a presure sensitiverubberized adhesive is most desirable, other materials may be used foraccomplishing the desired result.

While a preferred embodiment of the invention has been described in somedetail, it should be regarded as an illustration or example rather thanas a limitation or restriction of the invention, since various changesin the construction, combination, and arrangement of the parts may bemade without departing from the spirit and scope of the invention.

I claim:

The combination of a metal sheet and a corner protector thereforconsisting of a triangular strip of paper-like material having ascuff-resistant surface at one side and a pressure sensitive adhesiveentirely covering the other side, and a central fold line extending fromone angle and normal to the opposite side thus dividing it into twotriangular portions, the protector being folded on said fold line at acorner of the sheet over one edge thereof and the portions at the sidesof the fold line adhering to opposite side faces of the sheet adjacentto and flush with the metal sheet at the corner thereof.

References Cited in the file of this patent UNITED STATES PATENTS470,383 Lynch Mar. 8, 1892 1,256,818 Nile Feb. 19, 1918 1,672,113Catherman June 5, 1928 1,760,564 Reynolds May 27, 1930 2,120,461 CopemanJune 14, 1938 2,226,601 Euller Dec. 31, 1940 2,363,422 Hutchings Nov.21, 1944 FOREIGN PATENTS 115,870 Australia Sept. 15, 1942

